Features & Benefits:
* Blue Size Pinion Bearing.
* Also upgrades Big Twin 1958-1986 to heavy duty late style bearing.
Tech Tips:
* This bearing must use OEM retaining ring # 11177A.
* Never use the 1958-1986 spiral retaining ring or the earlier OEM # 11177 C-Style retaining ring to secure the updated 1-piece Pinion bearing.
* Replaces OEM # 24643-87A
